Add window states docked; and docked minimized. Add wm window event to set docked and undocked.

ash/metrics/user_metrics_recorder.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/metrics/user_metrics_recorder.h"
 
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_view.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/shell.h"
@@ skipping 380 matching lines @@
                                   -1),
                               SHELF_ALIGNMENT_UMA_ENUM_VALUE_COUNT);
   }
 
   enum ActiveWindowStateType {
     ACTIVE_WINDOW_STATE_TYPE_NO_ACTIVE_WINDOW,
     ACTIVE_WINDOW_STATE_TYPE_OTHER,
     ACTIVE_WINDOW_STATE_TYPE_MAXIMIZED,
     ACTIVE_WINDOW_STATE_TYPE_FULLSCREEN,
     ACTIVE_WINDOW_STATE_TYPE_SNAPPED,
+    ACTIVE_WINDOW_STATE_TYPE_DOCKED,
     ACTIVE_WINDOW_STATE_TYPE_COUNT
   };
 
   ActiveWindowStateType active_window_state_type =
       ACTIVE_WINDOW_STATE_TYPE_NO_ACTIVE_WINDOW;
   wm::WindowState* active_window_state = ash::wm::GetActiveWindowState();
   if (active_window_state) {
     switch (active_window_state->GetStateType()) {
       case wm::WINDOW_STATE_TYPE_MAXIMIZED:
         active_window_state_type = ACTIVE_WINDOW_STATE_TYPE_MAXIMIZED;
         break;
       case wm::WINDOW_STATE_TYPE_FULLSCREEN:
         active_window_state_type = ACTIVE_WINDOW_STATE_TYPE_FULLSCREEN;
         break;
       case wm::WINDOW_STATE_TYPE_LEFT_SNAPPED:
       case wm::WINDOW_STATE_TYPE_RIGHT_SNAPPED:
         active_window_state_type = ACTIVE_WINDOW_STATE_TYPE_SNAPPED;
         break;
+      case wm::WINDOW_STATE_TYPE_DOCKED:
+      case wm::WINDOW_STATE_TYPE_DOCKED_MINIMIZED:
+        active_window_state_type = ACTIVE_WINDOW_STATE_TYPE_DOCKED;
+        break;
       case wm::WINDOW_STATE_TYPE_DEFAULT:
       case wm::WINDOW_STATE_TYPE_NORMAL:
       case wm::WINDOW_STATE_TYPE_MINIMIZED:
       case wm::WINDOW_STATE_TYPE_INACTIVE:
       case wm::WINDOW_STATE_TYPE_END:
       case wm::WINDOW_STATE_TYPE_AUTO_POSITIONED:
         active_window_state_type = ACTIVE_WINDOW_STATE_TYPE_OTHER;
         break;
     }
   }
   UMA_HISTOGRAM_ENUMERATION("Ash.ActiveWindowShowTypeOverTime",
                             active_window_state_type,
                             ACTIVE_WINDOW_STATE_TYPE_COUNT);
 }
 
 }  // namespace ash